Re: [uml-devel] Host panic when UML reads host /dev/shm

[BlaisorBlade <blaisorblade_spam@yahoo.it>]

Alle 03:22, venerdì 21 novembre 2003, Jeff Dike ha scritto:
> blaisorblade_spam@yahoo.it said:
> > I think hostfs reads files just as any normal process on the host,
> > right? Or  it does anything special or at least unusual?
>
> Nothing unusual, just normal file IO.
>
> > Could the unusual thing be the context switching of SKAS? I'll test if
> > it happens within TT mode.
>
> I doubt there's any difference.
Hmmm... maybe the VM code handling this does some VM assumption... false with 
SKAS. And then, I saw that mm/shmem.c, to create shared memory, creates an 
"unlinked file under tmpfs"(quote from a function description I read there). 
And maybe, there are even other operations which could, then, be relevant 
here.

Does UML uses shared memory? Or maybe just threading could be the issue?
-- 
cat <<EOSIGN
Paolo Giarrusso, aka Blaisorblade
Linux Kernel 2.4.21/2.6.0-test on an i686; Linux registered user n. 292729
EOSIGN



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